Chiba/Communication

From 2007.igem.org

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(Future Work)
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[[Chiba|Introduction]] | [[Chiba/Project_Design|Project Design]] ( [[Chiba/Engeneering_Flagella|1.Sticky Hands]] | [[Chiba/Communication|2.Communication]] | [[Chiba/Quorum_Sensing|3.Size Control]] ) |  [[Chiba/Making Marimo|Making Marimos]] |  [[Chiba/Goal|Our Goal]] || [[Chiba/Team_Members|Team Members]] | [[Chiba/Members_Only|メンバ連絡簿]]
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[[Chiba|Introduction]] | [[Chiba/Project_Design|Project Design]] ( [[Chiba/Engeneering_Flagella|1.Affinity Tag]] | [[Chiba/Communication|2.Communication Module]] | [[Chiba/Quorum_Sensing|3.Size Control]] ) |  [[Chiba/Making Marimo|Making Marimos]] |  [[Chiba/Goal|Our Goal]]<br>
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[[Chiba/Acknowledgements|Acknowledgements]] | [[Chiba/Team_Members|Team Members]] | [http://chem.tf.chiba-u.jp/igem/ iGEM Chiba Website] | [[Chiba/Members_Only|メンバ連絡簿]]  
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Revision as of 02:13, 27 October 2007

Chiba logo.png

Introduction | Project Design ( 1.Affinity Tag | 2.Communication Module | 3.Size Control ) | Making Marimos | Our Goal
Acknowledgements | Team Members | [http://chem.tf.chiba-u.jp/igem/ iGEM Chiba Website] | メンバ連絡簿


Communication Unit

Our Aim

Fig1. Quorum sensing for activating receivers!

Our aim is to make bacteria stick around a bacteria core. Make a sender, a bacteria core that sends a signal, and a receiver, a bacteria that receive a signal. Our system works like this: Sender core, which is sticking each other in advance, sends a signal to receivers, which grow stickey tags. Then they stick together. We use Quorum sensing as a signal.

About Quorum Sensing

Fig2. Constructed circuit of Quorum sensing in our system.

Quorum sensing is a cell-to-cell signaling action of bacteria. They detect the cell density of the same species and coordinate the expression behavior of their cells. Species of Gram-Negative signaling transfer molecules (so-called autoinducer) is a series of acyl homoserine lactone (AHL). When the AHL concentration exceeds a threshold, that is, the cell population is over a certain number, the promoter plux transcription is activated.

Detailed gene circuit is discribed in Fig. 2.

  • more about quorum sensing

[http://partsregistry.org/Featured_Parts:Cell-Cell-Signaling Cell-Cell-Signaling]

[http://www.che.caltech.edu/groups/fha/quorum.html About Quorum sensing]

Experiments: New Parts!!

Recievers

New Parts We Made!!

  • AHL > GFP generator (constitutive aiiA) : [http://partsregistry.org/Part:BBa_I729006 BBa_T729006]
    • BBa I729006 circuit.jpg
  • AHL > GFP & aiiA generator : [http://partsregistry.org/Part:BBa_I729005 BBa_I729005]
    • BBa I729005 circuit.jpg
  • Sensitive AHL > GFP generator : [http://partsregistry.org/Part:BBa_I729004 BBa_I729004]

From Biobrick

  • BBa_T9002
    • T9002 circuit.jpg

Future Work

  • inverter-aiiA
    • Rec inv aiia.jpg

Senders

New Parts We Made

  • MetK Sender ( could not deposit to registry )

MetK circuit.jpg

From Biobrick

  • Sender(BBa_S03623)

BBa s03623.jpg

Future Work

  • Light Sensing Sender (Light -> AHL)

Light sensing sender.jpg

  • futureでLuxIもスイッチできた方が魅力的だと思うんだ。∵ReceiverにSenderを混ぜるのではなく,初めからReceiverとSenderを混ぜた状態で凝集させることができる。ex.)Photoswitch etc... by tashiro
  • 僕も田代くんの意見に賛成。byとよたろ
  • ただ、このsectionに入れるよりも、Our GoalのFutureに移して面白さを語った方がいいですね。byとよたろ